PHYSICS MIDDLE SCHOOL

Suppose you increase your walking speed from 6 m/s to 11 m/s in a period of 2 s. What is your acceleration?

Answers

Answer 1
Answer:

Given

velocityΔ   v₁ = 6m/s

                  v₂ = 11m/s

Δ  time  =   Δ t =   2s

sign  /   indicate as division.

acceleration   a  =   Δv/ Δt

                         a = (v₂-v₁) / Δt

                         a  =  (11m/s -6m/s ) / 2s

                          a =   (5m/s)  /  2s

accerelation      a =    2.5m
Answer 2
Answer: I got 2.5, hope it works

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A rectangular glass block of dimensions 8.0 cm by 15.0 cm by 3.0 cm weighs 10.5 N. Calculate the minimum and the maximum pressure the bock can exert when it rests on a horizontal table.---
Please answer this asap!

Answers

The pressure can be solved using the following formula:

P = mg / A

Where: P = pressure
mg = mass * gravity = W = 10.5 N
A = l*w

Solving for A (maximum):

A = 8*3
A = 24 sq. cm

Solving for A (minimum):

A = 15*8
A = 120 sq. cm

Substituting into the first equation:

Pmax = 10.5 N / 24 sq.cm
Pmax = 0.4375 Pa

Pmin = 10.5 N / 120 sq.cm
Pmin = 0.0875 Pa

What does sealant restorations mean?

Answers

Sealants are used to protect healthy teeth that have a high potential for decay. Most often, these are the molars with deep grooves. A PRR, preventive resin restoration, is a type of filling that is placed when a cavity has begun and is infiltrating the grooves in the chewing surface of the tooth............

What is the definition of visible white light wave (RoyGBive)

Answers


There's no such thing as a wave of white light.  Every light wave with
a certain wavelength has some color.  White light is a mixture of all
the different wavelengths with all of the different visible colors. 
They're ALL there in white light.  When they all enter your eye at
the same time, your brain gets the message of brightness with
no particular color, which we call "white light".

Will give Brainliest
What is the name given to the change in state from liquid to solid?

Answers

Answer:

The freezing point hope this helps

Explanation:
The change in state from liquid to solid is freezing

What must occur before clouds can form?

Answers

The three conditions that must occur before clouds can form Sufficient water vapor must be present in the air. Water vapor is the invisible gas form of water. It is all around us, even in dry air.

What are the other conditions?

A surface for water vapor to condense on is needed. This is called a cloud condensation nuclei (CCN). CCN can be anything from dust particles to salt crystals.

The air must cool to its dew point. The dew point is the temperature at which the air is saturated with water vapor. When the air reaches its dew point, the water vapor will condense on CCN and form clouds.

In addition to these three conditions, there are other factors that can affect cloud formation, such as the wind and the amount of sunlight.

Read more about cloud formation here:

brainly.com/question/1242352

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The water vapor must lose heat energy

Freshwater leeches attach to fish and suck blood from the fish to extend periods of time. This results in sores on the fish that often become infected . This relationship is best described as?

Answers

Answer:

Parasitism.

Explanation:

Parasitism, in biology, is defined as a relationship between different species, formed by a parasite and a host. So, basically the parasite lives in or on the host, causing it harm. Parasites can be describe as predators that eat less than one prey unit, that is, they feed them selves slowly, they don't kill the prey instantly as actual predators do.

So, in this case, we are talking about leeches, which are defined as parasitic worms which lives in freshwater environments. They feed themselves by sucking blood from the host.

Therefore, the relation between these two species is Parasitism.
parasitism i think  because they dont feed of dead animals or it would be predation
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